May 16, 2013 #1 L libuz Junior Member level 1 Joined May 6, 2013 Messages 15 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Toronto Visit site Activity points 1,383 I have to charge a 7.4V battery of 2500mAh with 12V dc. What should be the current output of the power supply? what is the mathematical equation for this? If I want to charge the battery with another similar battery, how efficient will it be?
I have to charge a 7.4V battery of 2500mAh with 12V dc. What should be the current output of the power supply? what is the mathematical equation for this? If I want to charge the battery with another similar battery, how efficient will it be?
May 16, 2013 #2 A amayilsamy Advanced Member level 1 Joined Feb 5, 2013 Messages 420 Helped 38 Reputation 76 Reaction score 34 Trophy points 1,308 Location Chennai,India Visit site Activity points 3,370 I hope its helps you.
May 16, 2013 #3 L libuz Junior Member level 1 Joined May 6, 2013 Messages 15 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Toronto Visit site Activity points 1,383 It's a LDO. It is not power effiecient.
May 17, 2013 #4 A amayilsamy Advanced Member level 1 Joined Feb 5, 2013 Messages 420 Helped 38 Reputation 76 Reaction score 34 Trophy points 1,308 Location Chennai,India Visit site Activity points 3,370 It gives maximum 800 mA charging Current . Your battery fully charged in more or less 3 hours.. What you expect the charging current?
It gives maximum 800 mA charging Current . Your battery fully charged in more or less 3 hours.. What you expect the charging current?
May 18, 2013 #5 S snail888 Member level 1 Joined Dec 15, 2012 Messages 41 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Location china Visit site Activity points 1,454 ah,i think you real need a dc-dc converter.Just search it on linear website